381695964 has 72 divisors (see below), whose sum is σ = 973969920. Its totient is φ = 116281152.

The previous prime is 381695953. The next prime is 381695969. The reversal of 381695964 is 469596183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381695969) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 216117 + ... + 217875.

It is an arithmetic number, because the mean of its divisors is an integer number (13527360).

Almost surely, 2^381695964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381695964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (486984960).

381695964 is an abundant number, since it is smaller than the sum of its proper divisors (592273956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

381695964 is a wasteful number, since it uses less digits than its factorization.

381695964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1899 (or 1884 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 51.

The square root of 381695964 is about 19537.0408199400. The cubic root of 381695964 is about 725.3916007301.

The spelling of 381695964 in words is "three hundred eighty-one million, six hundred ninety-five thousand, nine hundred sixty-four".